Hail history for Walnut, Iowa
NOAA hail reports in and within about 5 km (3 miles) of Walnut since 1974, with preliminary reports to November 3, 2026.
Readout · Walnut
- Last hail
- Jun 24, 2023
- 1.00 in, quarter size
- Hail days, last 5 years
- 3
- since Nov 3, 2021 · 3 reports
- Largest ever
- 2.75 in
- baseball · Jul 26, 2000
16 reports on 13 days since 1974 · #256 of 483 Iowa places
Hail map · Walnut
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Walnut is from June 24, 2023. A local roofer can check and document it at no cost.
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What the record says about Walnut
The latest hail report in and around Walnut is from June 24, 2023, 1.00 in (quarter size). Since November 3, 2021 there have been 3 separate hail days; the biggest stones in that time were 1.00 in on June 24, 2023.
Over the 20 years 2006–2025, Walnut logged 8 reports on 7 hail days, about 0.4 reports a year. That is 11% less than the median Iowa town on this site (0.5 a year) and ranks #256 of 483 Iowa cities and towns on this site for all-time reports. Walnut accounts for 6% of the 260 reports filed in Pottawattamie County.
13% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Iowa town on this site. The largest hail on record here is 2.75 in (baseball) on July 26, 2000 near Walnut.
Reports held about level in 2016–2025 (4) compared with 2006–2015 (4). The busiest year was 2000, with 3 reports on 2 days. Hail here peaks in June (25% of reports); 56% fall between April and June.
Reports a year 2006–2025 average
- Walnut 0.4
- Pottawattamie County 6.2
- Median Iowa town on this site 0.5
Hail days 2006–2025
- Walnut 7
- Pottawattamie County 67
- Median Iowa town on this site 7
Share 2 in or larger of sized reports
- Walnut 13%
- Pottawattamie County 12%
- Median Iowa town on this site 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | 2 | ||||||||||
| 2022 | 1 | 1 | |||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 0 | ||||||||||||
| 2018 | 1 | 1 | |||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Jun 24, 2023 | 1 | 1.00 in | — |
| May 7, 2023 | 1 | 1.00 in | — |
| Apr 23, 2022 | 1 | 1.00 in | — |
Largest hail on record
| Date | Size | Location | County | Damage | Time · source |
|---|---|---|---|---|---|
| Jul 26, 2000 | 2.75 inbaseball | Walnut | Pottawattamie | — | 16:55 local · NCEI |
| Jul 15, 1992 | 2.50 intennis ball | — | Pottawattamie | — | 16:53 local · NCEI |
| Jun 30, 2014 | 1.75 ingolf ball | 1.04 W Walnut | Pottawattamie | — | 08:00 local · NCEI |
| May 13, 2001 | 1.75 ingolf ball | 2 S Walnut | Pottawattamie | — | 07:20 local · NCEI |
| Jul 26, 2000 | 1.75 ingolf ball | 10 NW Atlantic | Cass | $5K | 16:43 local · NCEI |
Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.
Size of every report
- Under 1 in 3 19%
- 1–2 in 11 69%
- 2 in + 2 13%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Jun 24, 2023 | 1.00 inquarter | 1.04 W Walnut | Pottawattamie | 16:16 local · NCEI |
| May 7, 2023 | 1.00 inquarter | 1.24 WNW Walnut | Pottawattamie | 20:49 local · NCEI |
| Apr 23, 2022 | 1.00 inquarter | 1.04 W Walnut | Pottawattamie | 04:55 local · NCEI |
| Apr 13, 2018 | 1.00 inquarter | 1.04 W Walnut | Pottawattamie | 15:15 local · NCEI |
| Jun 30, 2014 | 1.25 inhalf dollar | 1.04 W Walnut | Pottawattamie | 10:58 local · NCEI |
| Jun 30, 2014 | 1.75 ingolf ball | 1.04 W Walnut | Pottawattamie | 08:00 local · NCEI |
| Apr 5, 2010 | 1.00 inquarter | 7.47 SE Corley | Shelby | 23:05 local · NCEI |
| Jun 3, 2008 | 1.00 inquarter | 1.04 W Walnut | Pottawattamie | 03:10 local · NCEI |
| Aug 10, 2003 | 0.75 inpenny | 3 SE Walnut | Pottawattamie | 18:15 local · NCEI |
| May 13, 2001 | 1.75 ingolf ball | 2 S Walnut | Pottawattamie | 07:20 local · NCEI |
| Aug 5, 2000 | 1.00 inquarter | 3 E Walnut | Pottawattamie | 19:45 local · NCEI |
| Jul 26, 2000 | 2.75 inbaseball | Walnut | Pottawattamie | 16:55 local · NCEI |
Hail history near Walnut
Questions about hail in Walnut
How often does it hail in Walnut, Iowa?
16 hail reports have been logged in and within about 5 km (3 miles) of Walnut since 1974. Over the 20 years 2006–2025 that averages 0.4 reports a year. That ranks #256 of 483 Iowa places by number of reports.
When is hail season in Walnut?
Most reports come in June, July, April. June alone accounts for 25% of all reports.
What is the largest hail recorded in Walnut?
2.75 in (baseball size) on July 26, 2000 near Walnut. 13% of reports here were 2 inches or larger.
When did it last hail in Walnut?
The most recent report in this data is from June 24, 2023 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Walnut had in the last five years?
3 separate days with hail reports since November 3, 2021, adding up to 3 reports. The most recent was June 24, 2023.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.